OLED Gamma Voltage Adjustment via Aging Coefficient Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing OLED display devices require complex and costly factory adjustments to adjust gamma voltages after aging, necessitating return to the factory for maintenance, which is inconvenient and expensive for users.
Innovation Solution
A method for adjusting gamma voltages on an OLED display device using a processor chip, where a test picture is used to extract data information, compare it with pre-stored data, calculate aging coefficients, and output corresponding gamma voltage values to the gamma integrated circuit for adjustment, allowing users to perform the adjustment independently without returning the device to the factory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the gamma voltage adjustment is performed by returning the OLED display device to the factory for complex adjustment procedures, then the gamma voltage can be accurately adjusted to maintain display quality, but the maintenance cost and user inconvenience increase significantly
Solution Approach 1:
The OLED display device is equipped with self-diagnosis and self-adjustment capabilities. The processor chip automatically detects aging coefficients by comparing current display parameters with initial parameters, and autonomously adjusts gamma voltages without requiring factory intervention. This enables the device to maintain display quality through self-service, eliminating the need for users to return devices to the factory.
Solution Approach 2:
The system performs preliminary detection and adjustment actions by continuously monitoring display parameters and proactively adjusting gamma voltages before significant display quality degradation occurs. The processor chip compares real-time optical parameters with initial values and pre-adjusts gamma voltages based on detected aging trends, preventing the need for complex factory adjustments.
2Manufacturing precision
If the gamma voltage adjustment requires complex factory procedures including luminance sampling and data conversion, then accurate gamma calibration can be achieved, but the adjustment complexity and time consumption increase
Solution Approach 1:
The patent replaces complex mechanical and manual adjustment procedures with automated electronic detection and adjustment systems. The processor chip automatically detects display parameters, calculates aging coefficients, and adjusts gamma voltages through electronic control, eliminating the need for manual luminance sampling, data conversion, and TCON circuit adjustments that characterized traditional factory procedures.
Solution Approach 2:
The system implements a closed-loop feedback mechanism where the processor chip continuously detects current display parameters, compares them with initial parameters, and automatically adjusts gamma voltages based on the detected deviations. This feedback loop enables accurate gamma curve consistency to be maintained through automated adjustments rather than complex manual procedures.
3Reliability
If the OLED display device uses a single set of gamma voltage data stored in the device, then the initial display quality can be maintained, but the device requires factory returns for adjustment after aging
Solution Approach 1:
The system transitions from static gamma voltage data to dynamic, adaptive gamma voltage adjustment. The processor chip continuously detects aging coefficients by comparing current display parameters with initial parameters and dynamically adjusts gamma voltages in real-time. This enables the device to adapt to aging effects while maintaining display quality, eliminating the need for factory returns.
Solution Approach 2:
The patent implements automatic changes in gamma voltage parameters based on detected aging coefficients. The processor chip monitors display parameter changes over time and automatically adjusts gamma voltage values to compensate for aging effects. This parameter adaptation enables the device to maintain reliability and display quality throughout its operational life without requiring factory intervention.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A method for adjusting a gamma voltage of an OLED display device, comprising: acquiring a test picture pre-stored in the OLED display device, and extracting a first piece of data information on the test picture, wherein the firs data information comprises a current parameter or an optical parameter (S101); comparing the first piece of data information with a pre-stored second piece of data information on the test picture before the OLED display device is aged, analyzing a comparison result, and obtaining the aging coefficient of the OLED display device, wherein the second piece of data information can comprise a current parameter or an optical parameter (S102); acquiring a set of gamma voltage values corresponding to the aging coefficient, outputting the set of gamma voltage values to a gamma integrated circuit of the OLED display device, and completing the adjustment of the gamma voltage (S103). The method is used for adjusting the gamma voltage of the OLED display device, which is easily to be performed, so that the user can adjust the gamma voltage on his/her own without returning the OLED display device to the factory, thus reducing the maintenance cost effectively.